🌊 Subnautica
Survive an alien ocean planet. Find biome guides, blueprint unlock chains, and first-playthrough tips below.
🗺️ Key Biomes
Each biome has unique resources, creatures, and dangers. Explore in roughly this order for a safe progression.
Safe Shallows
Starting area. Titanium, Quartz, Salt. Safe to explore without a vehicle.
Kelp Forest
Crashfish danger. Grab Creepvine Seeds for Silicone Rubber early.
Grassy Plateaus
Safe for mid-depth. Lithium, Table Coral for Electronics.
Mushroom Forest
Magnetite and Rare Mushrooms. Build Seamoth before visiting.
Blood Kelp Zone
Deep and dangerous. Kyanite and advanced materials. Use PRAWN suit.
Inactive Lava Zone
Endgame biome. Diamonds, Nickel, Kyanite. Critical for Cyclops upgrades.
📐 Blueprint Unlock Chain
Blueprints unlock by scanning fragments found in the world. This is the recommended unlock order for survival efficiency.
- Seaglide — Scan in Kelp Forest & Grassy Plateaus (3 fragments)
- Seamoth — Scan in Grassy Plateaus & Mushroom Forest (3 fragments)
- Cyclops Hull/Engine/Bridge — 3 sets of 3 fragments in wrecks
- PRAWN Suit — Scan in Mushroom Forest & Sea Treader's Path (4 fragments)
- Rocket — Scanner Room & story progression required
🌱 Beginner Survival Tips
Playing for the first time? Keep these basics in mind and your first hours will be much smoother.
- Build a Scanner Room early — it marks resources on your HUD
- Always carry a knife — Bladderfish replenishes oxygen
- Reaper Leviathans at the edges of the Safe Shallows — stay in the middle early
- Check the PDA messages — they reveal the story and key coordinates
- Build Growbeds for a renewable food supply at your base
- The Cyclops doubles as a mobile base — install a Fabricator inside
💡 Tips & Tricks
Hard-won knowledge from experienced players to shortcut your journey to the ending.
Stay Lit
Always have a Flashlight or Headlamp — deep biomes are pitch black and full of Leviathans.
Follow Radio Signals
Every radio signal in your base leads to a wreck, pod, or Aurora section with fragments and story lore.
Scanner Room
Place one in the Shallows and upgrade to range 500m — it shows every resource cluster nearby.
PRAWN Grapple
Add the Grappling Arm to the PRAWN suit for fast movement in lava zones and tight caves.